mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-08-13 22:26:14 +00:00
eigrpd: Correctly set the mtu for eigrp packets sent
This version of eigrp pre-calculated the eigrp metric to be a default of 1500 bytes, but unfortunately it had entered the byte order wrong. Modify the code to properly set the byte order according to the eigrp rfc as well as actually read in and transmit the mtu of the interface instead of hard coding it to 1500 bytes. Fixes: #7986 Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
parent
127949a9af
commit
7c6ff2c54f
@ -229,6 +229,20 @@ void eigrp_del_if_params(struct eigrp_if_params *eip)
|
||||
free(eip->auth_keychain);
|
||||
}
|
||||
|
||||
/*
|
||||
* Set the network byte order of the 3 bytes we send
|
||||
* of the mtu of the link.
|
||||
*/
|
||||
static void eigrp_mtu_convert(struct eigrp_metrics *metric, uint32_t host_mtu)
|
||||
{
|
||||
uint32_t network_mtu = htonl(host_mtu);
|
||||
uint8_t *nm = (uint8_t *)&network_mtu;
|
||||
|
||||
metric->mtu[0] = nm[1];
|
||||
metric->mtu[1] = nm[2];
|
||||
metric->mtu[2] = nm[3];
|
||||
}
|
||||
|
||||
int eigrp_if_up(struct eigrp_interface *ei)
|
||||
{
|
||||
struct eigrp_prefix_descriptor *pe;
|
||||
@ -256,9 +270,7 @@ int eigrp_if_up(struct eigrp_interface *ei)
|
||||
metric.delay = eigrp_delay_to_scaled(ei->params.delay);
|
||||
metric.load = ei->params.load;
|
||||
metric.reliability = ei->params.reliability;
|
||||
metric.mtu[0] = 0xDC;
|
||||
metric.mtu[1] = 0x05;
|
||||
metric.mtu[2] = 0x00;
|
||||
eigrp_mtu_convert(&metric, ei->ifp->mtu);
|
||||
metric.hop_count = 0;
|
||||
metric.flags = 0;
|
||||
metric.tag = 0;
|
||||
|
@ -40,7 +40,7 @@
|
||||
struct eigrp_metrics {
|
||||
uint32_t delay;
|
||||
uint32_t bandwidth;
|
||||
unsigned char mtu[3];
|
||||
uint8_t mtu[3];
|
||||
uint8_t hop_count;
|
||||
uint8_t reliability;
|
||||
uint8_t load;
|
||||
|
Loading…
Reference in New Issue
Block a user